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380441387 = 451384299
BaseRepresentation
bin10110101011010…
…001001100101011
3222111212102110202
4112223101030223
51234343111022
6101430102415
712266461364
oct2653211453
9874772422
10380441387
11185827277
12a74aaa0b
1360a84061
1438752b6b
15235ed592
hex16ad132b

380441387 has 4 divisors (see below), whose sum is σ = 380530200. Its totient is φ = 380352576.

The previous prime is 380441377. The next prime is 380441417. The reversal of 380441387 is 783144083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783144083 = 1746067299.

It is a cyclic number.

It is not a de Polignac number, because 380441387 - 218 = 380179243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 380441387.

It is not an unprimeable number, because it can be changed into a prime (380441377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37637 + ... + 46662.

It is an arithmetic number, because the mean of its divisors is an integer number (95132550).

Almost surely, 2380441387 is an apocalyptic number.

380441387 is a deficient number, since it is larger than the sum of its proper divisors (88813).

380441387 is an equidigital number, since it uses as much as digits as its factorization.

380441387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88812.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 380441387 is about 19504.9067416381. The cubic root of 380441387 is about 724.5959775072.

The spelling of 380441387 in words is "three hundred eighty million, four hundred forty-one thousand, three hundred eighty-seven".

Divisors: 1 4513 84299 380441387